Leon had eleven arrests, nine of which were for arson, and no convictions prior to his thirteenth birthday. He served five years in prison for sodomizing underage girls.

Two weeks after his release, Leon, who tested positive for the HIV virus, was arrested by Detectives Olivia Benson and Elliot Stabler before he and a fourteen-year-old (whose age was previously unbeknownst to Leon) girl would have sex on a rooftop.

He was charged with attempted statutory rape, but the charges were later dropped due to a lack of evidence.

Leon was also a suspect in multiple rapes and murders, but just as he was about to be arrested for attempting to have sex with another underage girl, he succumbed to a drug overdose and died. The real perpetrator, Malik "King" Harris, was later identified, arrested, and executed for the crimes.